A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
NSN 5935-00-283-2687
NSN 5998-01-536-7550
NSN 6645-00-829-8868
NSN 6220-00-409-4304
NSN 5975-01-634-0678
NSN 5990-00-814-9788
NSN 5990-01-201-1698
NSN 6110-01-264-3486
NSN 5999-00-392-2595
NSN 5855-00-494-9581
NSN 6240-01-260-2256
NSN 5925-01-634-0664